On Thu, Jan 29, 2015 at 01:11:13PM -0500, David Legault wrote:
Hello,
I'm working on some linux kernel driver stuff and I have a fake path called / dev/blah/whatever that points to /dev/block/real_device.
That's a userspace "path", right? Why would the kernel care about this?
The issue is that lookup_bdev will fail to follow the symlink so I'd like to massage the path upfront by getting the real path (/dev/block/real_device) so I can hand that off to lookup_bdev so it returns successfully instead of an error.
Why are you calling this from within the kernel? You should have a bdev already directly within the kernel, no need to muck around in /dev/ What exactly are you doing that you feel you need access to a block device node? thanks, greg k-h